That relatively minor negative aside, Unknown Number was a lot of fun and is easy to recommend for those looking to play a short, novel game that brings its ideas together well. Actual decision points are relatively limited, so replay value isn't particularly high, but the experience is fun enough the first time through that that isn't a big drawback. I appreciated how Unknown Number became a bit more personal and expanded some of its concepts towards the end, and I'll definitely be in line to check out a sequel, spiritual or otherwise, if godolphin games ever makes one.